It is well-known that the takeoff weight of a space operation vehicle is composed mainly of fuel. Payload and vehicle hardware make up only a small percentage of the total weight. As a consequence, an important component of mission design for a space operation vehicle is trajectory planning since mission designers can increase the amount of payload or time-in-orbit by reducing the fuel required to accomplish the mission. In this paper, a method to calculate a fuel-optimal cruise trajectory for a hypersonic space vehicle is presented. The method of direct transcription is used to discretize the state and control variables along the vehicle's flight path to transform the optimization problem into a nonlinear programming problem to find the most fuel-efficient trajectory. Structural constraint in terms of normal loading on the vehicle is imposed along the trajectory. Comparisons are made between the fuel-optimal trajectory and static cruise trajectory.


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    Titel :

    A fuel-optimal trajectory for a constrained hypersonic vehicle using a direct transcription method


    Beteiligte:
    Ngo, A.D. (Autor:in)


    Erscheinungsdatum :

    2004-01-01


    Format / Umfang :

    329412 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch